Gary J. Martin

Reproducibility and relation to mean heart rate of heart rate variability in normal subjects and in patients with congestive heart failure secondary to coronary artery disease.

D. Singer, W. Remme, D. V. van Hoogenhuyze, 1991, The American journal of cardiology.

Heart rate variability and sudden death secondary to coronary artery disease during ambulatory electrocardiographic monitoring.

D H Singer, G J Martin, D. Singer, 1987, The American journal of cardiology.